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X-ray diagnostic facility having a digital X-ray detector and a stray radiation grid

a technology of stray radiation and detector, applied in the field of xray diagnostic facilities, can solve problems such as the complexity of this, and achieve the effect of reducing the number of radiation sources

Active Publication Date: 2005-06-28
SIEMENS HEALTHCARE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013]An object of the present invention is to prevent the above-described aliasing effects in a simple way.
[0015]The stray radiation grid is still considered as having an irregular structure even though the average number of lamellae per length unit can be constant over larger distances. The only aim is local “density fluctuations” in order to suppress or reduce the aliasing effects.
[0016]It has proven advantageous when the highly absorbent material is lead and the highly X-ray-transparent material is paper.

Problems solved by technology

This, however, is clearly more complicated for practical reasons.

Method used

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  • X-ray diagnostic facility having a digital X-ray detector and a stray radiation grid
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  • X-ray diagnostic facility having a digital X-ray detector and a stray radiation grid

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Embodiment Construction

[0025]FIG. 1 shows an X-ray diagnostics facility of the type disclosed by German PS 195 27 148. The facility has a first stand 1 to which an X-ray radiator 2 is height-adjustably attached, the X-ray radiator 2 generating a conical X-ray 3, and having a second stand 4 to which an X-ray detector 5 is secured such that it is aligned in height to the X-ray radiator 2, so that X-rays are incident on the X-ray detector 5. A stray radiation grid 6 is arranged in front of the X-ray detector 5, the stray radiation grid 6 suppressing the stray radiation arising in the examination subject that is located in the beam path of the X-ray 3. The output signal of the X-ray detector 5 is supplied to an image computer or image system 7. The image system 7 can include computers, converters, image memories and processing circuits. For playback of the acquired X-ray images, the image system is connected to a monitor 8. A high-voltage generator 9 supplies the X-ray tube of the X-radiator 2 with high-volta...

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PUM

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Abstract

An X-ray diagnostic facility has an X-ray device for generating X-rays, a digital X-ray detector for acquiring the X-rays and for converting them into an electrical signal sequence that has picture elements arranged in a first structure, an image system for processing the electrical signal sequence and a playback device, and a stray radiation grid having a second structure composed of highly absorbent material and highly X-ray transparent material in alternation precedes the X-ray detector. One of the first and second structures is irregularly fashioned.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention is directed to an X-ray diagnostic facility with an X-ray device for generating X-radiation of the type having a digital X-ray detector for acquiring the X-rays and converting them into an electrical signal sequence that has picture elements arranged in a first structure, and having an image system for processing the electrical signal sequence as well as a playback device, and having a stray radiation grid having a second structure of highly absorbent material and highly X-ray transparent material in alternation, preceding the X-ray detector.[0003]2. Description of the Prior Art[0004]Digital X-ray detectors have been changing classic radiography and angiography and cardangiography for years. A wide variety of technologies have already been in use for some time or are about ready for the market namely digital technologies such as image intensifier camera systems based on video or CCD camera, storage...

Claims

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Application Information

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IPC IPC(8): H04N5/32
CPCH04N5/32H04N23/30
Inventor SPAHN, MARTIN
Owner SIEMENS HEALTHCARE GMBH
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